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Branched chain polybasic carboxylic acid ammonium salt mixture as well as preparation method and application thereof

A polycarboxylic acid and polycarboxylic acid ester technology, applied in the field of electrolytes, can solve the problems of poor electrical conductivity and durability, achieve excellent physical and chemical properties and durability, improve temperature resistance, and reduce production costs.

Inactive Publication Date: 2008-06-25
广州市二轻研究所股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of this mixture in the conductivity and durability tests is not outstanding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) In the reactor, add 32kg pimelinketone and 90kg ethanol, then add 55kg hydrogen peroxide. The purity requirements of raw materials are: ethanol ≥ 99.5%, cyclohexanone ≥ 99.5%, concentrated sulfuric acid ≥ 98%, and hydrogen peroxide = 30%. The reaction temperature was controlled at 5° C., and the reaction time was controlled at 15 minutes.

[0030] (2) Add 49kg methyl methacrylate in the above reaction solution, under stirring condition, slowly add 20kg acid catalyst concentrated sulfuric acid and 109kg metal salt catalyst ferrous sulfate, under the catalysis of metal salt, carry out polymerization reaction. The purity requirements of the raw materials are methyl methacrylate ≥ 99.5%, and ferrous sulfate ≥ 99%. The reaction temperature was controlled at -5°C, and the reaction was carried out for 6 hours.

[0031] After the reaction, the reaction solution was left to stand and separated into layers. The upper layer is a mixture of branched polycarboxylic acid ester...

Embodiment 2

[0039] (1) In the reactor, add 32kg pimelinketone and 120kg ethanol, then add 93kg hydrogen peroxide. The purity requirements of raw materials are: ethanol ≥ 99.5%, cyclohexanone ≥ 99.5%, concentrated sulfuric acid ≥ 98%, and hydrogen peroxide = 30%. The reaction temperature was controlled at 8° C., and the reaction time was controlled at 20 minutes.

[0040] (2) Add 65kg methyl methacrylate to the above reaction solution, slowly add 30kg acid catalyst concentrated sulfuric acid and 145kg metal salt catalyst ferrous sulfate. Under the catalysis of metal salts, the polymerization reaction is carried out. The purity requirements of the raw materials are methyl methacrylate ≥ 99.5%, and ferrous sulfate ≥ 99%. The temperature of the reaction was controlled at 0° C., and the reaction was carried out for 7 hours.

[0041] After the reaction, the reaction solution was left to stand and separated into layers. The upper layer is a mixture of branched polycarboxylic acid esters, and t...

Embodiment 3

[0047] (1) In the reactor, add 32kg pimelinketone and 150kg ethanol, then add 130kg hydrogen peroxide. The purity requirements of raw materials are: ethanol ≥ 99.5%, cyclohexanone ≥ 99.5%, concentrated sulfuric acid ≥ 98%, and hydrogen peroxide = 30%. The reaction temperature was controlled at 10° C., and the reaction time was controlled at 30 minutes.

[0048] (2) Add 82kg methyl methacrylate to the reaction solution, slowly add 40kg acid catalyst concentrated sulfuric acid and 181kg metal salt catalyst ferrous sulfate. Under the catalysis of metal salts, the polymerization reaction is carried out. The purity requirements of the raw materials are methyl methacrylate ≥ 99.5%, and ferrous sulfate ≥ 99%. The temperature of the reaction was controlled at 10° C., and the reaction was carried out for 8 hours.

[0049] After the reaction, the reaction solution is allowed to stand for stratification, the upper layer is a mixture of branched chain polycarboxylates, and the lower la...

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PUM

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Abstract

The invention discloses branched chain polybasic carboxylic acid ammonia salt mixture as well as the preparation method and the application thereof. The main component of the electrolyte prepared by the branched chain polybasic carboxylic acid ammonia salt mixture contains branched chain binary carboxylic acid ammonia salt and branched chain quarternary carboxylic acid ammonia salt, and also contains a small quantity of the branched chain ternary carboxylic acid ammonia salt, the carbon chain is more than nine carbon atoms in length, and is provided with one or a plurality of alkyl branched chain(s). The branched chain polybasic carboxylic acid ammonia salt mixture prepared by the invention has the advantages that the electric conductivity is high, the flash fire voltage is high, the voltage withstand capacity is high, the temperature resistant stability is high and the temperature scope is wide. Particularly, the branched chain quarternary carboxylic acid ammonia salt and the branched chain ternary carboxylic acid ammonia salt are contained in the polybasic carboxylic acid ammonia salt mixture, and the invention has higher electric conductivity and better application performance compared with the simple branched chain binary carboxylic acid ammonia salt.

Description

technical field [0001] The invention relates to an electrolyte for preparing the working electrolyte of an electrolytic capacitor, in particular to a branched chain polycarboxylic acid ammonium salt mixture and its preparation method and application. Background technique [0002] The main composition of the electrolyte of an aluminum electrolytic capacitor is: about 80% or more of the main solvent (usually ethylene glycol), 5-10% of the main electrolyte and a small amount of other additives. The performance of the main electrolyte determines the performance of the electrolyte and is also a key factor in the final performance of the capacitor. Over the years, relevant companies at home and abroad have continuously improved the research on the main electrolyte in the capacitor electrolyte, and the system of the main electrolyte has also been continuously upgraded. The general situation is as follows: [0003] 1. Boric acid + ethylene glycol system: In this system, the esteri...

Claims

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Application Information

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IPC IPC(8): H01G9/022H01G9/035C07C51/353C07C55/18C07C55/22C07C55/24
Inventor 赵国鹏于欣伟谢原寿高泉涌冯丽蓉李魁
Owner 广州市二轻研究所股份有限公司
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